21745890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:324

約数の個数: 96

約数和(自身を含む): 61107696

約数和(自身を除く): 39361806

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 45, 51, 61, 85, 90, 102, 122, 153, 170, 183, 233, 255, 305, 306, 366, 466, 510, 549, 610, 699, 765, 915, 1037, 1098, 1165, 1398, 1530, 1830, 2074, 2097, 2330, 2745, 3111, 3495, 3961, 4194, 5185, 5490, 6222, 6990, 7922, 9333, 10370, 10485, 11883, 14213, 15555, 18666, 19805, 20970, 23766, 28426, 31110, 35649, 39610, 42639, 46665, 59415, 71065, 71298, 85278, 93330, 118830, 127917, 142130, 178245, 213195, 241621, 255834, 356490, 426390, 483242, 639585, 724863, 1208105, 1279170, 1449726, 2174589, 2416210, 3624315, 4349178, 7248630, 10872945, 21745890]

約数ペア:

[(1, 21745890), (2, 10872945), (3, 7248630), (5, 4349178), (6, 3624315), (9, 2416210), (10, 2174589), (15, 1449726), (17, 1279170), (18, 1208105), (30, 724863), (34, 639585), (45, 483242), (51, 426390), (61, 356490), (85, 255834), (90, 241621), (102, 213195), (122, 178245), (153, 142130), (170, 127917), (183, 118830), (233, 93330), (255, 85278), (305, 71298), (306, 71065), (366, 59415), (466, 46665), (510, 42639), (549, 39610), (610, 35649), (699, 31110), (765, 28426), (915, 23766), (1037, 20970), (1098, 19805), (1165, 18666), (1398, 15555), (1530, 14213), (1830, 11883), (2074, 10485), (2097, 10370), (2330, 9333), (2745, 7922), (3111, 6990), (3495, 6222), (3961, 5490), (4194, 5185)]